Fco. Ruiz-Sánchez,
Miguel Quezada,
Mario Paredes,
Josefina Casillas AND
Rebeca Riebeling
Instituto de Patologia Infecciosa Experimental, University of Guadalajara, Guadalajara Jal., Mexico
1. Fifteen patients with typical acute cases of malaria weretreated with chloramphenicol by the oral route. In 13 casesPlasmodium vivax was found; in one Plasmodium falciparum wasfound alone, and two were mixed infections.
2. The dose variedfrom 50 mg. to 75 mg. per kilogram of bodyweight per day. Durationof treatment was 8 days in 13 cases,and 6 days and 10 daysrespectively in the other two. Furtherobservations will benecessary to determine the minimum effectivedose.
3. Resultswere positive in all cases. The number of attackswhich occurredafter beginning of treatment varied from 0 to5 with an averageof 3.4. The parasites disappeared betweenthe second and tenthday of treatment in the cases with P. vivax.In the infectionswith P. falciparum only the asexual formsdisappeared duringthis period; the sexual forms persisted andthe drug apparentlyhad no action on them.
4. In the subsequent short period ofobservation there wereno relapses, but we cannot say that thesepatients have beendefinitely cured.
5. The therapeutic valueof chloramphenicol in malaria is markedlyinferior to that ofother drugs in common use.